F8.2 (30 Pts) Design a priority encoder with four active high inputs: W, X, Y, and Z; and three active high outputs: A,

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F8.2 (30 Pts) Design a priority encoder withfour active high inputs: W, X, Y, and Z; and three active highoutputs: A, B, and N. A and B should indicate the number of thehighest priority device that is requesting service and N shouldindicate no active requests. Input W is the lowest priority and Zis the highest. ( Hint: when W is the only active input , A and Bare both active)
a. Draw the truth table of the encoder
b. Draw Karnaugh maps to determine the minimum sum-of-productexpressions for the outputs.
c. Draw the logic symbol of the encoder with the inputs andoutputs are labeled.
d. Draw the logic circuit for the encoder using only NANDgate.
e. Explain how to convert the encoder to active low outputsencoder.